Nozzle



Junev 16, 1936. H. Huss 2,044,695

NOZZLE Filed Deo. 28, 1935 QQ/mmm ATTORNEYS.

Patented June 16, 1936 UNITED STATES PATENT OFFICE NOZZLE Henry Huss,Greenwich. Conn.

Application December 28, 1935, Serial No. 56,471

5 claims. (ol. 299-120) This invention relates to atomizing nozzles ortips. and provides a nozzle or tip which is particularly well adaptedfor use in oil burners in which the oil is delivered under highpressure.

One of the objects of my invention is the provision. of a nozzleconstruction embodying a nozzle body containing a member equipped withan ejection orifice and with a swirl chamber. a distributor head and athreaded stem, my improved lo construction providing for accuratepositioning of these members in the nozzle body and relatively to eachother.

ln devices of this character dimensions are very small, and for fullefficiency of the device it is l5 necessary that the partsV shall beexactly positioned. Also in such devices it is exceedingly' dimcult toprevent slight eccentric motion ci the threaded stem, which is likely tocause misalignment. This is avoided in the present construc- 20 tion inthat the member which is equipped with an ejection orice and with aswirl chamber floats, i. e., is capable of slight lateral movement inthe nozzle body so as to permit the distributor head properly to seatitself regardless of 2.3 any eccentricity in the threaded stem. Ifdesired the distributor head too may oat thereby further insuring exactpositioning of the distributor or distributor head in relation to theswirl chamber and ejection orice. 3o In the accompanying drawing I` haveshown two embodiments of my invention:

Fig. 1 showing in part sectional elevation one embodiment of myinvention; and

Fig. 2 a modification. 35 Referring to the drawing in detail and rst ofall to Fig. 1, the nozzle body, designated I, is

provided with a discharge orifice 2 at its front end, shown as at theapex of a flaring recess 3.

In the frontend of the bore of the nozzle body 40 I is a member 4. Thismember is a loose fit in f the nozzle body as will be seen from thedrawing, where a space 5 is shown between the member and the `walls ofthe bore of the nozzle body. It is to be understood that the outsidediameter lof the 45 member 4 is several thousandths of an inch less ithan the inside diameter of the bore of the nozzle body which receivesit, to insure provision for lateral play of the member in the nozzlebody.

The space 5 shown in the drawing is somewhat 50 exaggerated for purposesof illustration.

The member 4 at its rear end is beveled or recessed as shown at 6, thisrecess merging into a swirl chamber s and an ejection bore 1 extendinlongitudinally of the setting member.'

55 Threaded into the nozzle body is a screw stem 8 the lower end ofwhich is beveled as shown at 9 to correspond in form to the recessedface of the member 4. This beveled stem-end is provided with tangentialgrooves i which conduct and direct the oil, or other material to beatomized, to the swirl chamber. This beveled and grooved stem-endconstitutes a distributor or distributor head.

`The threaded portion of the stem 8 and which I will designate il issomewhat enlarged in di- 10 ameter with respect to the remainder of thestem.

\ The stem is provided with a longitudinal and cross-bore l2 for thepassage of the material to be atomized from a suitable source of supply.

' It will now be apparent from the foregoing that 15 by making themember i a loose iit, i. e., a floating fit in the nozzle body thedistributor or distributor head will always be brought into precise andexact seating positionin the recessed face of the member Il. regardlessof any eccentric motion of the stem 8 such as referred to at the outsetof this description. Inother'words, when the stem 8 is screwed inwardlyof the nozzle body to bring the distributor into engagement with therecessed face 6 of the member 4, the latter 25 being a oating flt in thebore of the nozzle body,

is free `to be displaced laterally sumciently to insure seating of thedistributor head uniformly against the recessed face of the member 4,irrespective of any slight eccentric movement of the stem. Not only doesthis insure discharge of the material being atomizedin la perfect cone,but it insures that the material of the cone will be uniform. In theburning of oil, using nozzles of the general type herein described,improper seating of the distributor head in the recessed face of themember 4 allows more oil to move toward the swirl chamber along one sideof the distributor head than the other, and this is reflected in thedischarging material and as the same is burned, atomization not beinguniform and the flame spotty and unsatisfactory.

The embodiment of my invention illustrated in Fig. 2 is quite similar tothat just described. In this construction the nozzle body I is provided-with a discharge orifice 2'. Located in the bore of the nozzle body isa member 4' corresponding to the member 4 of Fig. 1, this member, asillustrated having a floating fit in the nozzle body core.

|4de'signates a oating distributor or distribu- 50 tor head located inthe nozzle body above the member 4', the end of this distributor beingbeveled or tapered as shown at 9' to fit the recessed rear face 6 of themember 4. The recess in the rear face of the `member 4 merges into aswirl 55 chamber s and ejection orifice 1' in the member 4'.

8 designates a threaded stem similar to the stem 8 of Fig. 1 in that itis provided with longitudinal channels I2', but in this embodiment of myinvention the stem is not integral with the distributor. In other words,the member 4 and distributor i4 in this construction are free to havelateral movement relatively to each other as well as relatively to thestem 8.

It will now be apparent that when the stem 8 is screwed inwardly of thenozzle body into engagement with the distributor, the lateral playpermitted so far as the distributor and the member 4 are concerned willpromote precise seating of the tapered face of the distributor in therecessed face of the member 4' despite any eccentric motion of the screwstem such as above referred to, a condition. which as above pointed outis not only desirable but essential.

While as above explained my improved construction provides for preciseand exact alignment of the parts of the nozzle, it also provides anotheradvantage in that in the construction of Fig. 1 the member 4 may bereadily replaced at the minimum of expense, while in the construction ofFig. 2 any of the parts can be replaced independently of the others.

What I claim isz- 1. An atomizing nozzle comprising a body having adischarge orifice, a floating member in said body, adjacent saiddischarge orifice, provided with an ejection orifice communicating withsaid discharge orifice and with a tapered swirl chamber to the rear ofsaid ejection orifice, said floating member being further provided witha tapered surface at the rear of said swirl chamber, a distributor inthe said nozzle body having a tapered face corresponding in form to andfitting against said tapered surface, said distributor face beingprovided with whirl-producing grooves communicating with said swirlchamber, and a screw stem in the body behind said distributor forcoaction with the distributor, said stem being provided with a channelfor the passage of the material to be atomized Valong said stem to saiddistributor.

2. An atomizing nozzle comprising a body having a discharge orifice, afloating member in said body, adjacent said discharge orifice, providedwith an ejection orifice communicating with said discharge orliice andwith a tapered swirl chamber to the rear of said ejection orifice, saidfloating member being further provided with atapered surface at the rearof said swirl chamber, a distributor in the said nozzle body having atapered facecorresponding in form to and fitting against said taperedsurface, said distributor face being provided with whirl-producinggrooves communicating with said swirl chamber, and a screw stem in thebody behind said distributor and rigid with the distributor, said stembeing provided with a longitudinal channel for the passage of thematerial to be atomized along said stem to said distributor.

3. An atomizing nozzle comprising a body havlng a discharge orifice, afloating member in said body, adjacent said discharge orifice, providedwith an ejection orice communicating with said discharge orifice andwith a tapered swirl chamber to the rear of said ejection orifice, saidfloating member being further provided with a tapered surface at therear of said swirl chamber, a oating distributor in the said nozzle bodyhaving a tapered face corresponding in form to and fitting against saidtapered surface, said distributor face being provided withwhirl-producing grooves communicating with said swirl chamber, and ascrew stem in the body behind said floating distributor for coactionwith the distributor, said stem being provided with a longitudinalchannel for the passage of the material to be atomized along said stemto said distributor.

4. An atomizing nozzle comprising a body having a discharge orifice, amember in said body, adjacent said discharge orifice, provided with anejection orifice communicating with said discharge orifice and with atapered swirl chamber to the rear of said ejection orifice, said memberbeing further'provided with a tapered surface at the rear of said swirlchamber, a distributor in the said nozzle body having a tapered facecorresponding in form to and tting against said tapered surface, saiddistributor face being provided with whirl-producing groovescommunieating with said swirl chamber, and a screw stem in the bodybehind said distributor for coaction with the distributor, said stembeing provided with a longitudinal channel for the passage of thematerial to be atomized along said stem to said distributor, said firstmentioned member and said distributor being free to have lateral playwith respect to said stem.

5. An atomizing nozzle comprising a body having a discharge orifice, amember in said body, adjacent said discharge orifice, provided with anejection orifice communicating with said discharge orifice and with atapered swirl chamber to the rear of said ejection orifice, said memberbeing further provided with a tapered surface at the rear of said swirlchamber, a distributor in the said nozzlebody having a tapered facecorresponding in form to and fitting against said tapered surface, saiddistributor face being pro-` vided with whirl-producing groovescommunicating with said swirl chamber, and a screw stem in the bodybehindsaid distributor for coaction with thedistributor, said stem beingprovided with a longitudinal channel forthe passage of the material tobe atomized along said stem to said distributor, said first mentionedmember and said distributor being free to have lateral play with respectto said stem and relatively to each other.

HENRY HUSS.

